Overvoltage Protection With 3-Phase Voltage - Siemens Siprotec 5 7SS85 Techical Data

Technical Data

11.19 Overvoltage Protection with 3-Phase Voltage

11.19 Overvoltage Protection with 3-Phase Voltage
Setting Values for Stage Type Definite Time-Overvoltage Protection
Measured value
Method of measurement
Pickup mode
Pickup value 27
Time delay
Dropout ratio
Setting Values for Stage Type Inverse Time-Overvoltage Protection
Measured value
Method of measurement
Pickup mode
Pickup value
Pickup factor
Characteristic constant k
Characteristic constant α
Characteristic constant c
Time multiplier
Additional time delay
Reset time
Operate Curve for Stage Type Inverse Time-Overvoltage Protection
Where
T Operate delay
op
T Inverse-time delay
inv
T Additional time delay (parameter Additional time delay)
add
Where
T Inverse-time delay
inv
T Time multiplier (parameter Time dial)
p
V Measured voltage
27 If you have selected the method of measurement = RMS value, do not set the threshold value under 10 V.
598
Phase-to-phase
Phase-to-ground
Fundamental component
RMS value
1 out of 3
3 out of 3
0.300 V to 340.000 V
0.00 s to 300.00 s
0.90 to 0.99
Phase-to-phase
Phase-to-ground
Fundamental component
RMS value
1 out of 3
3 out of 3
0.300 V to 340.000 V
1.00 to 1.20
0.00 to 300.00
0.010 to 5.000
0.000 to 5.000
0.05 to 15.00
0.00 s to 60.00 s
0.00 s to 60.00 s
SIPROTEC 5, Low-Impedance Busbar Protection 7SS85, Manual
Increments of 0.001 V
Increments of 0.01 s
Increments of 0.01
Increments of 0.001 V
Increments of 0.01
Increments of 0.01
Increments of 0.001
Increments of 0.001
Increments of 0.01
Increments of 0.01 s
Increments of 0.01 s
C53000-G5040-C019-6, Edition 06.2016